/*
 * films3.c -- 使用抽象数据类型(ADT)风格的链表
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "list.h"

void showmovies(Item item);
char * s_gets(char * st, int n);

int main(void)
{
    List movies;
    Item temp;

    InitializeList(&movies);
    if (ListIsFull(&movies)) 
    {
        fprintf(stderr, "No memory available! Bye!\n");
        exit(1);
    }

    puts("Enter first movie title");

    while (s_gets(temp.title ,TSIZE) != NULL && temp.title[0] != '\0') {
        puts("Enter your rating <0-10):");
        scanf("%d", &temp.rating);
        while (getchar() != '\n') {
            continue;
        }
        if (AddItem(temp, &movies) == false) {
            fprintf(stderr, "Problem allocating memory\n");
            break;
        }

        if (ListIsFull(&movies)) {
            puts("The list is now full.");
            break;
        }
        puts("Enter next movie title (empty line to stop):");
    }

    if (ListIsEmpty(&movies)) {
        printf("No data entered:\n");
    } else {
        printf("Here is the movie list:\n");
        Traverse(&movies, showmovies);
    }

    printf("You entered %d movies.\n", ListItemCount(&movies));

    EmptyTheList(&movies);

    printf("Bye!\n");

    return 0;

}


void showmovies(Item item)
{
    printf("Movie: %s Rating: %d\n", item.title, item.rating);
}

char * s_Gets(char * st, int n)
{
    char * ret_val;
    char * find;

    ret_val = fgets(st, n , stdin);
    if (ret_val) {
        find = strchr(st, '\n');
        if (find) {
            *find = '\0';
        } else {
            while (getchar() != '\n') {
                continue;
            }
        }

    }
    return ret_val;
}

char * s_gets(char * st, int n)
{
    char * ret_val;
    char * find;
    ret_val = fgets(st, n ,stdin);
    if (ret_val) {
        find = strchr(st, '\n');
        if (find) {
            *find = '\0';
        } else {
            while (getchar() !='\n') {
                continue;
            }
        }
    }
    return ret_val;
}
